Session: Fire Alarm Installation

Transcription

1 Session: Fire Alarm Installation

2 PRESENTED BY: MICHAEL L. SAVAGE, L. LLC. SAVAGE, LLC. 2

3 About the speaker Director of Building Safety in Marion County, Florida Licensed Inspector in Maryland for 23 years. Licensed in New Mexico. Serves on ICC, IAPMO and NFPA Committees including the NEC. 36 ICC Certifications including MCP and CBO Member of the Board of Governors for ICC ES. Chair of ICC Compliance Code Action Committee (CCAC) Member of ICC Code Correlation Committee (CCC) ICC Preferred Provider for Continuing Education. MICHAEL L. SAVAGE, LLC. 3

4 What is a Fire Alarm System? A system or portion of a combination system that consists of components and circuits arranged to monitor and annunciate the status of fire alarm or supervisory signal-initiating devices and to initiate the appropriate response to those signals. This is the NFPA preferred definition. MICHAEL L. SAVAGE, LLC. 4

5 When are Fire Alarms required?? SECTION 907 FIRE ALARM AND DETECTION SYSTEMS (907.1 General.) This section covers the application, installation, performance and maintenance of fire alarm systems and their components Where required new buildings and structures. An approved fire alarm system installed in accordance with the provisions of this code and NFPA 72 shall be provided in new buildings and structures in accordance with Sections through and provide occupant notification in accordance with Section 907.5, unless other requirements are provided by another section of this code. Not fewer than one manual fire alarm box shall be provided in an approved location to initiate a fire alarm signal for fire alarm systems employing automatic fire detectors or water-flow detection devices. Where other sections of this code allow elimination of fire alarm boxes due to sprinklers, a single fire alarm box shall be installed. MICHAEL L. SAVAGE, LLC. 5

6 WHAT CODES APPLY TO FIRE ALARM SYSTEMS? MICHAEL L. SAVAGE, LLC. 6

7 2018 INTERNATIONAL BUILDING CODE SECTION 907 FIRE ALARM AND DETECTION SYSTEMS General. This section covers the application, installation, performance and maintenance of fire alarm systems and their components Construction documents Where required new buildings and structures Fire safety functions MICHAEL L. SAVAGE, LLC. 7

8 National Electrical Code (NFPA 70 ) The National Electrical Code (NEC ) covers all of the necessary requirements for all electrical work performed in a building. The Fire Protective Signaling Systems portion of the code (NEC Article 760) details the specific requirements for wiring and equipment installation for fire protection signaling systems. Specifications include installation methods, connection types, circuit identification, and wire types (including gauges and insulation). The NEC places restrictions on the number and types of circuit combinations that can be installed in the same enclosure. MICHAEL L. SAVAGE, LLC. 8

9 National Fire Alarm Code (NFPA 72 ) The recommended requirements for installation of fire alarm systems and equipment in residential and commercial facilities are covered in this code. Explains where to provide the fire alarm system (dictated by the occupancy chapter). Included are requirements for installation of initiating devices (sensors) and notification appliances (visual or audible). Inspection, testing, and maintenance requirements for fire alarm systems and equipment are also covered. MICHAEL L. SAVAGE, LLC. 9

10 Life Safety Code (NFPA 101 ) This document is focused on the preservation and protection of human life, as opposed to property. Life safety requirements are detailed for both new construction and existing structures. Specifically, necessary protection for unique building features and construction are detailed. In addition, chapters are organized to explain when, where, and for what applications fire alarm systems are required, the necessary means of initiation and occupant notification, and the means by which to notify the fire department. This code also details any equipment exceptions to these requirements. MICHAEL L. SAVAGE, LLC. 10

11 Other Codes and Standards. Uniform Fire Code (NFPA 1) This code was established to help fire authorities continually develop safeguards against fire hazards. A chapter of this code is dedicated to fire protection systems. Information and requirements for testing, operation, installation, and periodic preventive maintenance of fire alarm systems are included in this portion of the code. MICHAEL L. SAVAGE, LLC. 11

12 Other Codes and Standards. The NFPA also publishes specific standards that are used by fire alarm system professionals. These include: NFPA 75, Standard for Protection of Electronic Computer/Data Processing Equipment NFPA 80, Standard for Fire Doors and Other Opening Protectives NFPA 90A, Standard for the Installation of Air Conditioning and Ventilating Systems NFPA 90B, Standard for the Installation of Warm Air Heating and Air Conditioning Systems NFPA 92A, Standard for Smoke-Control Systems Utilizing Barriers and Pressure Differences Americans with Disability Act - Accessible Guidelines (ADA-AG): Explains where to provide visual notification for the hearing impaired. MICHAEL L. SAVAGE, LLC. 12

13 NFPA 70, Article 760 Fire Alarm Systems MICHAEL L. SAVAGE, LLC. 13

14 What s Covered in the NEC? Scope. This article covers the installation of wiring and equipment of fire alarm systems including all circuits controlled and powered by the fire alarm system. MICHAEL L. SAVAGE, LLC. 14

15 Fire Alarm System Installation NEC Article 760 specifies the wiring methods and special cables required for fire protective signaling systems. The following special cable types are used in protective signaling systems: Power-limited fire alarm (FPL) cable Power-limited fire alarm riser (FPLR) cable Power-limited fire alarm plenum (FPLP) cable Nonpower-limited fire alarm (NPLF) circuit cable Nonpower-limited fire alarm riser (NPLFR) circuit riser cable Nonpower-limited fire alarm plenum (NPLFP) circuit cable MICHAEL L. SAVAGE, LLC. 15

16 760.3 Other Articles (Fire Alarm Systems) Fire alarm circuits required to comply with Article 760. These same fire alarm circuits are required to comply with other articles and sections of the Code as required by Only those sections of Article 300 referenced in this article shall apply to fire alarm systems. Spread of Fire or Products of Combustion. See Ducts, Plenums, and Other Air-Handling Spaces. See MICHAEL L. SAVAGE, LLC. 16

17 General Wiring Requirements In addition to NEC Article 760, the following NEC articles cover other items of concern for fire alarm system installations. NEC Sections and 300.6(A),(B), and (C), Corrosive, Damp, or Wet Locations NEC Section , Spread of Fire or Products of Combustion NEC Section , Ducts, Plenums, and Other Air Handling Spaces NEC Articles 500 through 516 and 517, Part IV, Locations Classified as Hazardous NEC Article 695, Fire Pumps NEC Article 725, Remote-Control and Signaling Circuits (Building Control Circuits) NEC Article 770, Fiber Optics NEC Article 800, Communications Circuits NEC Article 810, Radio and Television Equipment MICHAEL L. SAVAGE, LLC. 17

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19 760.3(A) Spread of Fire or Products of Combustion (A) & Spread of Fire or Products of Combustion. Electrical installations in hollow spaces, vertical shafts, and ventilation or airhandling ducts shall be made so that the possible spread of fire or products of combustion will not be substantially increased. Openings around electrical penetrations into or through fire-resistant-rated walls, partitions, floors, or ceilings shall be firestopped using approved methods to maintain the fire resistance rating. MICHAEL L. SAVAGE, LLC. 19

20 760.3(B) Ducts, Plenums, and Other Air-Handling Spaces (B) See Section , where installed in ducts or plenums or other spaces used for environmental air. Wiring in air handling spaces requires the use of approved wiring methods, such as: Special plenum-rated cable Flexible metal tubing (Greenfield) Electrical metallic tubing (EMT) Intermediate metallic conduit (IMC) Rigid metallic conduit (hard wall or Schedule 80 conduit) MICHAEL L. SAVAGE, LLC. 20

21 Photo: IAEI Archives (B) Other Space Used for Environmental Air. Low Volt, ATC and Thermostat Cables Shall be Listed. *Plenum Rated Cables* MICHAEL L. SAVAGE, LLC. 21 9/21/2018

22 760.3(C) Hazardous (Classified) Locations. The NEC includes requirements for wiring in hazardous locations. Some areas that are considered hazardous are listed below: NEC Article 511, Commercial Garages, Repair and Storage NEC Article 513, Aircraft Hangars NEC Article 514, Gasoline Dispensing and Service Stations NEC Article 515, Bulk Storage Plants NEC Article 516, Spray Application, Dipping, and Coating NEC Article 517, Healthcare Facilities MICHAEL L. SAVAGE, LLC. 22

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24 760.3(D) Corrosive, Damp, or Wet Locations. Where installed in corrosive, damp, or wet location Sections , 300.6, and (G), shall apply Deteriorating Agents. Unless identified for use in the operating environment, no conductors or equipment shall be located in damp or wet locations; where exposed to gases, fumes, vapors, liquids, or other agents that have a deteriorating effect on the conductors or equipment; or where exposed to excessive temperatures. Equipment not identified for outdoor use and equipment identified only for indoor use, such as dry locations, indoor use only, damp locations, or enclosure Types 1, 2, 5, 12, 12K, and/or 13, shall be protected against damage from the weather during construction. IN SHORT IT SHALL BE LISTED!! MICHAEL L. SAVAGE, LLC. 24

25 760.3(D) Corrosive, Damp, or Wet Locations Protection Against Corrosion and Deterioration. Raceways, cable trays, cablebus, auxiliary gutters, cable armor, boxes, cable sheathing, cabinets, elbows, couplings, fittings, supports, and support hardware shall be of materials suitable for the environment in which they are to be installed. (G) Corrosive Conditions. Conductors exposed to oils, greases, vapors, gases, fumes, liquids, or other substances having a deleterious effect on the conductor or insulation shall be of a type suitable for the application. MICHAEL L. SAVAGE, LLC. 25

26 760.3(E) Building Control Circuits. Article 725, where building control circuits (e.g., elevator capture, fan shutdown) are associated with the fire alarm system. Wiring in elevator shafts must directly relate to the elevator and be installed in rigid metallic conduit, rigid nonmetallic conduit, EMT, IMC, or up to 6 of flexible conduit. MICHAEL L. SAVAGE, LLC. 26

27 760.3(F) Optical Fiber Cables. Where optical fiber cables are utilized for fire alarm circuits, the cables shall be installed in accordance with Article 770. MICHAEL L. SAVAGE, LLC. 27

28 Article 300.8: MICHAEL L. SAVAGE, LLC. 28

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30 760.3(I) Vertical Support for Fire Rated Cables and Conductors. Vertical installations of circuit integrity (CI) cables and conductors installed in a raceway or conductors and cables of electrical circuit protective systems shall be installed in accordance with MICHAEL L. SAVAGE, LLC. 30

31 760.3(I) Vertical Support for Fire Rated Cables and Conductors Supporting Conductors in Vertical Raceways includes: (A) Spacing Intervals Maximum. (B) Fire-Rated Cables and Conductors. (C) Support Methods. MICHAEL L. SAVAGE, LLC. 31

32 760.3(J) Number and Size of Cables and Conductors in Raceway. Installations shall comply with , Number and Size of Conductors in Raceway. The number and size of conductors in any raceway shall not be more than will permit dissipation of the heat and ready installation or withdrawal of the conductors without damage to the conductors or to their insulation. (K) Bushing. A bushing shall be installed where cables emerge from raceway used for mechanical support or protection in accordance with (C). MICHAEL L. SAVAGE, LLC. 32

33 Access to Electrical Equipment Behind Panels Designed to Allow Access. Access to electrical equipment shall not be denied by an accumulation of conductors and cables that prevents removal of panels, including suspended ceiling panels. MICHAEL L. SAVAGE, LLC. 33

34 Mechanical Execution of Work. Fire alarm circuits shall be installed in a neat workmanlike manner. Cables and conductors installed exposed on the surface of ceilings and sidewalls shall be supported by the building structure in such a manner that the cable will not be damaged by normal building use. Such cables shall be supported by straps, staples, cable ties, hangers, or similar fittings designed and installed so as not to damage the cable. The installation shall also comply with 300.4(D). MICHAEL L. SAVAGE, LLC. 34

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36 Abandoned Cables. The accessible portion of abandoned fire alarm cables shall be removed. Where cables are identified for future use with a tag, the tag shall be of sufficient durability to withstand the environment involved. MICHAEL L. SAVAGE, LLC. 36

37 Abandoned Cables. MICHAEL L. SAVAGE, LLC. 37

38 Fire Alarm Circuit Identification. Fire alarm circuits shall be identified at terminal and junction locations in a manner that helps to prevent unintentional signals on fire alarm system circuit(s) during testing and servicing of other systems. MICHAEL L. SAVAGE, LLC. 38

39 Fire Alarm Circuits Extending Beyond One Building. Power-limited fire alarm circuits that extend beyond one building and run outdoors either shall meet the installation requirements of Parts II, III, and IV of Article 800 or shall meet the installation requirements of Part I of Article 300. Non power-limited fire alarm circuits that extend beyond one building and run outdoors shall meet the installation requirements of Part I of Article 300 and the applicable sections of Part I of Article 225. MICHAEL L. SAVAGE, LLC. 39

40 300.5 Underground Installations. (As Used per ) (A) Minimum Cover Requirements. Direct-buried cable or conduit or other raceways shall be installed to meet the minimum cover requirements of Table (B) Wet Locations. The interior of enclosures or raceways installed underground shall be considered to be a wet location. Insulated conductors and cables installed in these enclosures or raceways in underground installations shall be listed for use in wet locations and shall comply with (C). Any connections or splices in an underground installation shall be approved for wet locations. (C) Underground Cables Under Buildings. Underground cable installed under a building shall be in a raceway. Exception No. 1: Type MI Cable shall be permitted under a building without installation in a raceway where embedded in concrete, fill, or other masonry in accordance with (6) or in underground runs where suitably protected against physical damage and corrosive conditions in accordance with (10). MICHAEL L. SAVAGE, LLC. 40

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43 314.21(B) Outlet Raceways and Device Boxes in with Wet Enclosed Locations Devices or Utilization Equipment. Abovegrade Where raceways are installed in wet locations above-grade, the interior of these raceways shall be considered to be a wet location. Outlet and device boxes that enclose devices or utilization equipment shall have a minimum internal depth that accommodates the rearward projection of the equipment and the size of the conductors that supply the equipment. Insulated conductors and cables installed in raceways in wet locations abovegrade shall comply with 310.8(C). Photo: IAEI Archives MICHAEL L. SAVAGE, LLC. 43

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45 Conductors of Different Circuits in Same Cable, Enclosure, or Raceway. (A) Class 1 and non power limited fire alarm circuits shall be permitted to occupy the same cable, enclosure, or raceway without regard to whether the individual circuits are alternating current or direct current, provided all conductors are insulated for the maximum voltage of any conductor in the enclosure or raceway. (B) Fire Alarm with Power-Supply Circuits. Power-supply and fire alarm circuit conductors shall be permitted in the same cable, enclosure, or raceway only where connected to the same equipment. MICHAEL L. SAVAGE, LLC. 45

46 Power Sources for PLFA Circuits. (B) Branch Circuit. The branch circuit supplying the fire alarm equipment(s) shall supply no other loads. The location of the branch-circuit overcurrent protective device shall be permanently identified at the fire alarm control unit. The circuit disconnecting means shall have red identification, shall be accessible only to qualified personnel, and shall be identified as FIRE ALARM CIRCUIT. The red identification shall not damage the overcurrent protective devices or obscure the manufacturer s markings. This branch circuit shall not be supplied through ground-fault circuit interrupters or arc-fault circuit interrupters. MICHAEL L. SAVAGE, LLC. 46

47 (D) Audio System Circuits and PLFA Circuits. Audio system circuits described in 640.9(C) and installed using Class 2 or Class 3 wiring methods in compliance with and shall not be permitted to be installed in the same cable, cable tray, or raceway with power-limited conductors or cables. MICHAEL L. SAVAGE, LLC. 47

48 (D) Audio System Circuits and PLFA Circuits. MICHAEL L. SAVAGE, LLC. 48

49 (D) (D) Audio System Circuits and PLFA Circuits. MICHAEL L. SAVAGE, LLC. 49

50 Article Cable Substitutions MICHAEL L. SAVAGE, LLC. 50

51 Plenum vs. Riser Plenum Plenum spaces are defined as any space used as a return passage for environmental air. The wiring is not required to go through conduit Fire resistant and low smoke producing characteristics Non-Plenum does not necessarily mean Riser, some low-end products are also not riser. Floor Structural Support Plenum Air Handling Space Plenum Cables Air Supply Duct Suspended Ceiling Air Return Riser (or Plenum) Cable Access Shaft MICHAEL L. SAVAGE, LLC. 51

52 (F) Fire Alarm Circuit Integrity (CI) Cable or Electrical Circuit Protective System. Cables used for survivability of critical circuits shall be listed as circuit integrity (CI) cable. Cables specified in (C), (D), and (E), and used for circuit integrity shall have the additional classification using the suffix -CI. Cables that are part of a listed electrical circuit protective system shall be considered to meet the requirements of survivability. MICHAEL L. SAVAGE, LLC. 52

53 (F) Fire Alarm Circuit Integrity (CI) Cable or Electrical Circuit Protective System. MICHAEL L. SAVAGE, LLC. 53

54 (G) Fire Alarm Circuit Integrity (CI) Cable or Electrical Circuit Protective System (Multi-conductor). Cables that are listed for circuit integrity shall be identified with the suffix CI as defined in (F). Temperature rating shall be marked on the jacket of NPLFA cables that have a temperature rating exceeding 60 C (140 F). MICHAEL L. SAVAGE, LLC. 54 The jacket of NPLFA cables shall be marked with the conductor size.

55 (G) Fire Alarm Circuit Integrity (CI) Cable or Electrical Circuit Protective System (Multi-conductor). MICHAEL L. SAVAGE, LLC. 55

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57 Fire Alarm Cable Construction SHIELDING JACKET PVC Plenum cables are constructed with low-smoke PVC Tubed or Extruded Jacket Aluminum Backed Mylar DRAIN WIRE Included on all shielded constructions, used to ground the shield. INSULATION PVC Polypropylene LEGEND These 4 must appear on all cables Nationally Recognized Testing Lab Standard Footmarking Mfg. Part# Size Conductors Listing Agency Mfg. ID NEC Rating Mfg Date MICHAEL L. SAVAGE, LLC. 57

58 National Fire Alarm & Signaling Code MICHAEL L. SAVAGE, LLC. 58

59 What does NFPA 72 cover. NFPA 72 covers the application, installation, location, performance, inspection, testing, and maintenance of fire alarm systems, supervising station alarm systems, public emergency alarm reporting systems, fire warning equipment and emergency communications systems (ECS), and their components. MICHAEL L. SAVAGE, LLC. 59

60 What is it s purpose. The purpose of this Code is to define the means of signal initiation, transmission, notification, and annunciation; the levels of performance; and the reliability of the various Types of fire alarm systems, supervising station alarm systems, public emergency alarm reporting systems, fire warning equipment, emergency communications systems, and their components. MICHAEL L. SAVAGE, LLC. 60

61 Chapter 7 Documentation The documentation of the design, acceptance, and completion of new systems required under this Code shall comply with the minimum requirements of chapter 7. This chapter outlines documentation requirements but does not prohibit additional documentation from being provided. MICHAEL L. SAVAGE, LLC. 61

62 7.2 Minimum Required Documentation. Where documentation is required by the authority having jurisdiction, the following list shall represent the minimum documentation required for new fire alarm systems, supervising station and shared communication equipment, and emergency communications systems, including new systems and additions or alterations to existing systems: (1)Written narrative providing intent and system description (2) Riser diagram (3) Floor plan layout showing locations of all devices, control equipment, and supervising station and shared communications equipment with each sheet showing the following: (a) Point of compass (north arrow) (b) A graphic representation of the scale used (c) Room use identification (d) Building features that will affect the placement of initiating devices and notification appliances (4) Sequence of operation in either an input/output matrix or narrative form (5) Equipment technical data sheets MICHAEL L. SAVAGE, LLC. 62

63 7.2 Minimum Required Documentation. (6) Manufacturers published instructions, including operation and maintenance instructions (7) Battery capacity and de-rating calculations (where batteries are provided) (8) Voltage drop calculations for notification appliance circuits (9) Mounting height elevation for wall-mounted devices and appliances (10) Where occupant notification is required, minimum sound pressure levels that must be produced by the audible notification appliances in applicable covered areas (11) Pathway diagrams between the control unit and the supervising station and shared communications equipment (12) Completed record of completion in accordance with and (13) For software-based systems, a copy of site-specific software, including specific instructions on how to obtain the means of system and software access (password) (14) Record (as-built) drawings (15) Records, record retention, and record maintenance in accordance with Section 7.7 (16) Completed record of inspection and testing in accordance with and MICHAEL L. SAVAGE, LLC. 63

64 7.2 Minimum Required Documentation System design documents shall identify the name and contact information of the system designer All fire alarm drawings shall use symbols described in NFPA 170 or other symbols acceptable to the authority having jurisdiction. MICHAEL L. SAVAGE, LLC. 64

65 7.3 Design (Layout) Documentation * These requirements of Section 7.3 shall apply only where required by other governing laws, codes, or standards; by other parts of this Code; or by project specifications or drawings * Where required by governing laws, codes, or standards, or other parts of this Code, design (layout) documents shall be prepared prior to installing new systems * Where required by governing laws, codes, or standards, or other parts of this Code, preliminary plans shall be created. MICHAEL L. SAVAGE, LLC. 65

66 7.4 Shop Drawings (Installation Documentation) * Shop drawings shall be drawn to an indicated scale, on sheets of uniform size, with a plan of each floor Shop drawings for fire alarm and emergency communications systems shall provide basic information and shall provide the basis for the record (as-built) drawings required in accordance with Shop drawings shall include the following information: (1) Name of protected premises, owner, and occupant (where applicable) (2) Name of installer or contractor (3) Location of protected premises (4) Device legend and symbols in accordance with NFPA 170, or other symbols acceptable to the authority having jurisdiction (5) Date of issue and any revision dates MICHAEL L. SAVAGE, LLC. 66

67 7.5 Completion Documentation Before requesting final approval of the installation, if required by the authority having jurisdiction, the installing contractor shall furnish a written statement stating that the system has been installed in accordance with approved plans and tested in accordance with the manufacturer s published instructions and the appropriate NFPA requirements. MICHAEL L. SAVAGE, LLC. 67

68 7.5 Completion Documentation All systems including new systems and additions or alterations to existing systems shall include the following documentation, which shall be delivered to the owner or the owner s representative upon final acceptance of the system: (1)*An owner s manual and manufacturer s published instructions covering all system equipment (2) Record (as-built) drawings in accordance with (3) A completed record of completion form in accordance with (4) For software-based systems, record copy of the site-specific software in accordance with MICHAEL L. SAVAGE, LLC. 68

69 Basic System Components System control unit (alarm panel) Brain of system Processes alarm signals from actuating devices and transmits them to the local or other alerting system MICHAEL L. SAVAGE, LLC. 69

70 Elements of a Control Panel Requires two Power Sources Primary (AC) Secondary (DC) MICHAEL L. SAVAGE, LLC. 70

71 Elements of a Control Panel A fire alarm system can have a variety of input devices. Smoke Detector Manual Pull Station MICHAEL L. SAVAGE, LLC. 71

72 Basic System Components (cont.) Power supply Primary power supply Public electric utility Engine-driven generator Secondary power supply Storage battery and charger Engine-driven generator and 4-hour storage battery Multiple engine-driven generators Trouble signal power supply MICHAEL L. SAVAGE, LLC. 72

73 Basic System Components (cont.) Initiating devices(inputs): manual pull stations, heat detectors, smoke detectors, flame detectors, waterflow devices, tamper switches, and combination detectors Initiating Device Circuit (IDC): A circuit to which automatic or manual initiating devices are connected where the signal received does not identify the individual device operated Notification appliances: bells, buzzers, horns, recorded voice messages, strobe lights, speakers, and other warning appliances Auxiliary services MICHAEL L. SAVAGE, LLC. 73

74 Elements of a Control Panel Horns Strobes Outputs MICHAEL L. SAVAGE, LLC. 74

75 Outputs Notification Appliance: A fire alarm system component such as a bell, horn, speaker, light, or text display that provides audible, tactile, or visible output, or any combination thereof. Notification Appliance Circuit: A circuit or path directly connected to a notification appliance. MICHAEL L. SAVAGE, LLC. 75

76 The Basic System Main Controller Inputs Primary (AC) Secondary (DC) Outputs Signal Initiation/Initiating Devices: Need to understand stages of fire and what technology works best for each MICHAEL L. SAVAGE, LLC. 76

77 Design Goals. The design goal of most fire alarm systems is life safety. Some systems are designed with a secondary purpose of protecting either property or the activities (mission) within a building. The goal of both property and mission protection is the early detection of a fire so that firefighting efforts can begin while the fire is still small and manageable. MICHAEL L. SAVAGE, LLC. 77

78 Secondary Goal of Systems. Fire alarm systems with a secondary goal of property protection are commonly used in museums, libraries, storage facilities, and historic buildings in order to minimize damage to the buildings or their contents. Systems with a secondary goal of mission protection are commonly used where it is essential to avoid business interruptions, such as in hospitals, financial businesses, security control rooms, and telecommunication centers. MICHAEL L. SAVAGE, LLC. 78

79 Types of Fire Alarm Control Panels Conventional (hard wired) Fixed Programmable Addressable (multiplexed) Intelligent (analog data transfer) MICHAEL L. SAVAGE, LLC. 79

80 Conventional Hard Wired System Simplest type of control unit. Generally, a single circuit board contains power supply, control, initiating and notification circuitry. Some models use auxiliary circuit boards to perform special functions. Input/output devices connect to dedicated circuits. Designated outputs occur when initiating signals are received. Limited special functions and capabilities. MICHAEL L. SAVAGE, LLC. 80

81 Conventional Programmable System Basic Designed System Components selected by the designer to meet the direct needs of the customer. Initiating circuits are programmable for fire, waterflow, supervisory service, etc. Output circuits are programmable for code selection and silenceability. On some systems, input-to-output CIRCUIT (not device) mapping. MICHAEL L. SAVAGE, LLC. 81

82 Addressable System Each device (detector, pull station ) has a unique number assigned to it called the address for reporting alarms and troubles. Employs a Signaling Line Circuit (SLC) Loop along which all addressable input and output devices are connected to the fire alarm control panel. Addressable devices transmit an electronic message back to the Control Unit representing their state (Normal, Alarm, Trouble) when polled by the Control Unit. MICHAEL L. SAVAGE, LLC. 82

83 Analog System Always an Addressable System. Processes detailed, analog data from detectors about smoke levels. Can provide sensitivity data for each detector. Employs Drift Compensation (self calibration) in its detectors. MICHAEL L. SAVAGE, LLC. 83

84 Drift Compensation Drift compensation is the process by which an analog addressable control panel automatically adjusts an analog detectors alarm threshold to compensate for contaminants such as dust. This ensures the detector maintains a consistent sensitivity level, helping to avoid false alarms due to dirty detectors. MICHAEL L. SAVAGE, LLC. 84

85 Maintenance Alert Drift compensation occurs until it is nearing a point where it can no longer compensate and remain within U.L. requirements. This point is called Maintenance Alert Some systems handle a maintenance alert condition as a trouble while others flag the condition only, and continue to operate normally. MICHAEL L. SAVAGE, LLC. 85

86 Calibration Trouble A detector in a maintenance alert condition will eventually go into calibration trouble if not serviced. A detector in calibration trouble is not functioning correctly and requires service immediately. MICHAEL L. SAVAGE, LLC. 86

87 Multiplex Systems Multiplex systems are similar to hardwired systems in that they rely on zones for fire detection. The difference, however, is that multiplexing allows multiple signals from several sources to be sent and received over a single communication line. Each signal can be uniquely identified. This results in reduced control equipment, less wiring infrastructure, and a distributed power supply. Figure shows a simplified example of a multiplex system. MICHAEL L. SAVAGE, LLC. 87

88 Shielded vs. Unshielded Shielded Cables Offers excellent protection against RFI & EMI RFI Radio Frequency Interference (such as cell phones, radio towers or garage door openers) EMI Electro Magnetic Interference (caused by electric motors, ballasts, & other high voltage currents) Shielded cables should be used when installing near dimmer panels, light switches, in parallel runs, near neon or fluorescent lights and near power cables Unshielded Cables Cost effective for areas where interference (EMI) is not a concern MICHAEL L. SAVAGE, LLC. 88

89 Cabled vs. Straight Lay Cabled Reduces crosstalk interference from other signals (inside or outside the cable) Also referred to as twisted cables Most commonly used in fire alarm systems The majority of products are cabled to cover a wide range of applications and prevent having to stock/manage duplicate sku s Straight Lay Cost effective for areas where interference is not a concern Also referred to as parallel cables MICHAEL L. SAVAGE, LLC. 89

90 Stranded vs. Solid Solid Industry standard for most fire alarm cable Easier to terminate Easier to solder Lower cost Less attenuation / signal loss Stranded More flexible Reduces potential conductor breakage from repeated flexing MICHAEL L. SAVAGE, LLC. 90

91 Distance & Capacitance Distance cable will run Voltage drop should be calculated or refer to equipment manufacturer s recommendations Knowing the distance the cable will run also helps identify the right gauge size cable to select. Larger gauge for longer runs Capacitance The capacity of the insulation to hold an electric charge Often, lower capacitance (Picofarrads/foot = pf/ft) translates to a higher performance cable May need to meet requirements for specific hardware systems. MICHAEL L. SAVAGE, LLC. 91

92 All rooms Halls Storage areas Basements, attics, lofts Elevator shafts Enclosed stairways Dumb waiter shafts, and chutes Note: this includes sprinkler heads connected to the fire alarm MICHAEL L. SAVAGE, LLC. 92

93 Manual Alarm-Initiating Devices General requirements Mounting and distribution Generally not required in fully sprinklered structures Outmoded broken glass pull stations Coded versus noncoded pull stations Single-action and double-action pull stations MICHAEL L. SAVAGE, LLC. 93

94 Initiating Devices - Manual Fire Alarm Stations Manually-operated device used to initiate an alarm signal Single Action Stations require a single operation to activate it. Generally a pulling down action. Dual Action Stations require two distinct operations. A set-up and an activating action.

95 Automatic Alarm-Initiating Devices Continuously monitor atmosphere Four basic types Heat detectors Smoke detectors Fire-gas detectors Flame detectors MICHAEL L. SAVAGE, LLC. 95

96 Heat Detectors Fixed temperature heat detectors Fusible links/frangible bulbs Continuous line detector Bimetallic detector Rate-of-rise heat detector Pneumatic rate-of-rise spot detector Pneumatic rate-of-rise line detector Rate compensated detector Thermoelectric detector MICHAEL L. SAVAGE, LLC. 96

97 Heat Detectors Fixed Detectors: Alarm when the sensing element reaches a certain set point. Two common models have 135 and 200-degrees F range. Fixed element is generally a non-restorable type, and when activated, must be replaced. Rate-of-Rise Detectors: Respond when the rate of temperature increase is greater than an allowable limit (15 degrees in 60 secs.) (placement in a stable environment) (e.g.. ovens, heating vents, etc.). The Rate-of-Rise element is restorable when conditions return to normal. Rate Compensation will respond regardless of the rate of temperature rise. MICHAEL L. SAVAGE, LLC. 97

98 Smoke Detectors Photoelectric smoke detector Projected beam Refractory photocell Ionization smoke detector Dual chamber Air-sampling smoke detectors Cloud chamber Second type Photoelectric detectors are often faster than ionization detectors in sensing smoke from slow, smoldering fires. Ionization detectors are often better than photoelectric detectors at sensing fast, flaming fires. MICHAEL L. SAVAGE, LLC. 98

99 Photoelectric Smoke Detectors: Light-Scattering Type Uses a Light-Emitting Diode (LED) that sends a beam of light into a dark chamber- a photo diode sits on the other side of a partition within the chamber Smoke particles entering the chamber deflect some of the light rays into the photo cell. The photo cell generates a current when exposed to light, and if the current reaches a certain level, the detector alarms. MICHAEL L. SAVAGE, LLC. 99

100 Photoelectric Smoke Detectors: Light Obscuration Type In a projected Beam Detector, alarms are generated by diffusing the projected light beam by a specified percentage of obscuration. Total beam blockage generally results in a trouble signal.

101 Ionization Smoke Detectors Contain a small amount of radioactive material encapsulated in a metal chamber. Ionizing radiation develops a low, but steady electrical current. Smoke particles entering the chamber disrupt the current and trigger the detector's alarm. Ion detectors react more quickly to fast flaming fires that give off little smoke. MICHAEL L. SAVAGE, LLC. 101

102 Smoke Detectors (cont.) Limitations May not provide early warning of a fire developing on another level of a building May not detect fire developing on the other side of a closed door May not be effective when fire is caused by explosions resulting from careless housekeeping MICHAEL L. SAVAGE, LLC. 102

103 Types of Flame Detectors Ultraviolet (UV) uses a solid-state sensing element of silicon carbide, aluminum nitrate, or a gas-filled tube. The UV radiation of a flame causes gas in the element or tube to ionize and become conductive. When sufficient current flow is detected, an alarm is initiated. Infrared (IR) consists of a filter and lens system that screens out unwanted radiant-energy wavelengths and focuses the incoming energy on light-sensitive components. These flame detectors can respond to the total IR content of the flame alone or to a combination of IR with flame flicker of a specific frequency. They are used indoors and have filtering systems or solar sensing circuits to minimize unwanted alarms from sunlight. MICHAEL L. SAVAGE, LLC. 103

104 Fire Gas Detectors Monitors levels of gases released by combustion Carbon dioxide Carbon monoxide Faster than heat detectors but slower than smoke detectors MICHAEL L. SAVAGE, LLC. 104

105 Duct Detectors Photoelectric detector mounted in housing outside the ductwork that has probes that extend into the duct to sample the air inside the duct. Primarily used as a smoke control device to control the flow of air in ductwork.

106 Duct Detectors NFPA 90A and NFPA 90B require that duct detectors be tied into a general fire alarm system if the building contains one. If no separate fire alarm system exists, then remote audio/visual indicators, triggered by the duct detectors, must be provided in normally occupied areas of the building. Duct detectors that perform functions other than the shutdown of HVAC equipment must be supplied with backup power. IMC Section Common supply and return air systems. Where multiple air-handling systems share common supply or return air ducts or plenums with a combined design capacity greater than 2,000 cfm (0.9 m 3 /s), the return air system shall be provided with smoke detectors in accordance with Section

107 Duct Detectors

108 Notification Appliances Types Audible - Horns, Bells, Sounders, Sirens, Chimes, Speakers Visual - Strobes Physical - Bed shakers Olfactory - Smell MICHAEL L. SAVAGE, LLC. 108

109 Audible Devices Bells: Used if they are only for fire, or have a distinctive sound from other bell signaling devices. Often used as an external gong to indicate the flow of water in the sprinkler system. Horns: Loud and distinctive output. Often used in highnoise environments, such as manufacturing plants.

110 Audible Devices Sounders: Electronic or mechanical audible devices, which are capable of producing a variety of tones. Often, the tone is selectable during installation of the device. Chimes: Soft-toned appliances used where loud noises could be disruptive to other operations. Generally used where qualified personnel are continuously in attendance.

111 Audible Devices Sirens: Extremely loud devices generally limited in use to outdoor or heavy industrial areas. Speakers: Audible devices used in conjunction with voice evacuation messages. Life-Safety speakers are not generally associated with Muzak systems.

112 Visual Signaling Appliances VISUAL SIGNALING APPLIANCES ARE USED IN HIGH - NOISE ENVIRONMENTS, IN AREAS OCCUPIED BY HEARING-IMPAIRED INDIVIDUALS, OR IN AREAS WHERE AUDIBLE DEVICES MAY NOT BE DESIRED. MICHAEL L. SAVAGE, LLC. 112

113 Visual Devices Strobe Chime/Strobe Horn/ Strobe Speaker/Strobe

114 Record Keeping Maintaining Files and Records Documents: Inspection reports, forms, and letters Violation notices Summonses Plans review comments, approvals, and drawings Fire reports Investigations Permits and certificates issued MICHAEL L. SAVAGE, LLC. 114

115 Record Keeping Maintaining Files and Records (cont.) Occupancies: Those that have been issued a permit, certificate, or license Those that contain automatic fire suppression or detection systems Those that conduct hazardous operations or routinely house hazardous materials Duration: life of structure Public record Written records File for each inspected property Cataloging and storage MICHAEL L. SAVAGE, LLC. 115

116 Facilities shall maintain a record of the complete fire alarm tests, inspections and certifications. III MICHAEL L. SAVAGE, LLC. 116

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118 System Installer Qualifications? Fire alarm systems and emergency communications systems installation personnel shall be qualified or shall be supervised by persons who are qualified in the installation, inspection, and testing of the systems State or local licensure regulations shall be followed to determine qualified personnel. MICHAEL L. SAVAGE, LLC. 118

119 System Installer Qualifications? Personnel shall provide documentation of their qualification by one or more of the following: (1) Registration, licensing, or certification by a state or local authority (2) Certification by an organization acceptable to the authority having jurisdiction (3) Manufacturer s certification for the specific type and brand of system provided System installation trainees shall be under the supervision of a qualified system installer The system installer shall provide evidence of their qualifications and/or certifications when requested by the authority having jurisdiction. MICHAEL L. SAVAGE, LLC. 119

120 Fundamentals, Chapter Operation on secondary power shall not affect the required performance of a system or supervising station facility, including alarm, supervisory, and trouble signals and indications Capacity Battery calculations shall include a 20 percent safety margin to the calculated amp-hour rating This provides alignment with UL th edition and the realization that over the life of a battery, it will decay. MICHAEL L. SAVAGE, LLC. 120

121 Be tested annually by qualified personnel All facilities shall have inspections and written certifications of the complete fire alarm system completed by an approved qualified service representative in accordance with NFPA 72. MICHAEL L. SAVAGE, LLC. 121

122 14.4. Acceptance Testing Initial Acceptance Testing. All new systems shall be inspected and tested in accordance with the requirements of Chapter 14. The authority having jurisdiction shall be notified prior to the initial acceptance test Reacceptance Testing. When an initiating device, notification appliance, or control relay is added, it shall be functionally tested. When an initiating device, notification appliance, or control relay is deleted, another device, appliance, or control relay on the circuit shall be operated. When modifications or repairs to control equipment hardware are made, the control equipment shall be tested in accordance with Table , items 2(a) and 2(d). MICHAEL L. SAVAGE, LLC. 122

123 Partial Table Shown MICHAEL L. SAVAGE, LLC. 123

124 Testing Frequency. Unless otherwise permitted by other sections of this Code, testing shall be performed in accordance with the schedules in Table or more often if required by the authority having jurisdiction Devices or equipment that are inaccessible for safety considerations (e.g., continuous process operations, energized electrical equipment, radiation, and excessive height) shall be permitted to be tested during scheduled shutdowns if approved by the authority having jurisdiction. Extended intervals shall not exceed 18 months If automatic testing is performed at least weekly by a remotely monitored fire alarm control unit specifically listed for the application, the manual testing frequency shall be permitted to be extended to annually. MICHAEL L. SAVAGE, LLC. 124

125 Testing Table MICHAEL L. SAVAGE, LLC. 125

126 10.20 Impairments The system owner or the owner s designated representative shall be notified when a system or part thereof is impaired. Impairments to systems shall include out-of-service events A record of the impairments shall be maintained by the system owner or the owner s designated representative for a period of 1 year from the date the impairment is corrected The supervising station shall report to the authority having jurisdiction any system for which required monitoring has been terminated. MICHAEL L. SAVAGE, LLC. 126

127 10.20 Impairments * The service provider shall report to the authority having jurisdiction any system that is out of service for more than 8 hours * Where required by the authority having jurisdiction, mitigating measures shall be implemented for the period that the system is impaired The system owner or the owner s designated representative and the authority having jurisdiction shall be notified when an impairment period ends * Unwanted Alarms. For the purpose of reporting, alarm signals that are not the result of hazardous conditions shall be classified as Unwanted and subclassified as one of the following: (1) Malicious alarm (2) Nuisance alarm (3) Unintentional alarm (4) Unknown alarm MICHAEL L. SAVAGE, LLC. 127

128 Single- and Multiple-Station Alarms and Household Fire Alarm Systems Chapter * Mild to Severe Hearing Loss. Notification appliances provided for those with mild to severe hearing loss shall comply with the following: (1) An audible notification appliance producing a low frequency alarm signal shall be installed in the following situations: (a) Where required by governing laws, codes, or standards for people with hearing loss (b) Where provided voluntarily for those with hearing loss MICHAEL L. SAVAGE, LLC. 128

129 Single- and Multiple-Station Alarms and Household Fire Alarm Systems Chapter 29 (2)*The low frequency alarm signal output shall comply with the following: (a) The waveform shall have a fundamental frequency of 520 Hz ±10 percent. (b) The minimum sound level at the pillow shall be 75 dba, or 15 db above the average ambient sound level, or 5 db above the maximum sound level having a duration of at least 60 seconds, whichever is greater. MICHAEL L. SAVAGE, LLC. 129

130 Required Detection (1)*In all sleeping rooms and guest rooms (2)*Outside of each separate dwelling unit sleeping area, within 21 ft of any door to a sleeping room, the distance measured along a path of travel (3) On every level of a dwelling unit, including basements (4) On every level of a residential board and care occupancy (small facility), including basements and excluding crawl spaces and unfinished attics (5)*In the living area(s) of a guest suite (6) In the living area(s) of a residential board and care occupancy (small facility) MICHAEL L. SAVAGE, LLC. 130

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136 Peaked Ceilings Smoke alarms or smoke detectors mounted on a peaked ceiling shall be located within 36 in. horizontally of the peak, but not closer than 4 in. vertically to the peak. MICHAEL L. SAVAGE, LLC. 136

137 Sloped Ceilings Smoke alarms or smoke detectors mounted on a sloped ceiling having a rise greater than 1 ft in 8 ft horizontally shall be located within 36 in. of the high side of the ceiling, but not closer than 4 in. from the adjoining wall surface. MICHAEL L. SAVAGE, LLC. 137

138 Wall Mounting. Smoke alarms or smoke detectors mounted on walls shall be located not farther than 12 in. from the adjoining ceiling surface. MICHAEL L. SAVAGE, LLC. 138

139 Specific Location Requirements. (4) Cooking appliances has several requirements including; shall be equipped with an alarm-silencing means or be of the photoelectric type. (6) Smoke alarms and smoke detectors shall not be installed within a 36 in. horizontal path from a door to a bathroom containing a shower or tub. (7) Smoke alarms and smoke detectors shall not be installed within a 36 in. horizontal path from the supply registers of a forced air heating or cooling system and shall be installed outside of the direct airflow from those registers. (8) Smoke alarms and smoke detectors shall not be installed within a 36 in. horizontal path from the tip of the blade of a ceiling-suspended (paddle) fan. MICHAEL L. SAVAGE, LLC. 139

140 (4) Cooking appliances MICHAEL L. SAVAGE, LLC. 140

141 (4) Cooking appliances MICHAEL L. SAVAGE, LLC. 141

142 (4) Cooking appliances MICHAEL L. SAVAGE, LLC. 142

143 (4) Cooking appliances MICHAEL L. SAVAGE, LLC. 143

144 Installation meets Code? YES!! MICHAEL L. SAVAGE, LLC. 144

145 Specific Location Requirements. (11)*For tray-shaped ceilings (coffered ceiling) smoke alarms and smoke detectors shall be installed on the highest portion of the ceiling or on the sloped portion of the ceiling within 12 in. vertically down from the highest point. MICHAEL L. SAVAGE, LLC. 145

146 Manufacturer specs MICHAEL L. SAVAGE, LLC. 146

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148 AVOIDING DEAD AIR SPACES Dead air spaces may prevent smoke from reaching the Smoke/CO Alarm. To avoid dead air spaces, follow installation recommendations below. On ceilings, install Smoke/CO Alarms as close to the center of the ceiling as possible. If this is not possible, install the Smoke/CO Alarm at least 4 inches from the wall or corner. For wall mounting (if allowed by building codes), the top edge of Smoke/CO Alarms should be placed between 4 inches and 12 inches from the wall/ceiling line. On a peaked, gabled, or cathedral ceiling, install the first Smoke/CO Alarm within 3 feet of the peak of the ceiling, measured horizontally. Additional Smoke/CO Alarms may be required depending on the length, angle, etc. of the ceiling's slope. Refer to NFPA 72 for details on requirements for sloped or peaked ceilings. MICHAEL L. SAVAGE, LLC. 148

149 IRC SECTION R315 CARBON MONOXIDE ALARMS R New construction. For new construction, carbon monoxide alarms shall be provided in dwelling units where either or both of the following conditions exist. 1. The dwelling unit contains a fuel-fired appliance. 2. The dwelling unit has an attached garage with an opening that communicates with the dwelling unit. R315.3 Location. Carbon monoxide alarms in dwelling units shall be installed outside of each separate sleeping area in the immediate vicinity of the bedrooms. Where a fuelburning appliance is located within a bedroom or its attached bathroom, a carbon monoxide alarm shall be installed within the bedroom. MICHAEL L. SAVAGE, LLC. 149

150 What is the specific gravity of different gases? Carbon monoxide CO, SPG of Oxygen - O 2, SPG of Air 1), SPG of CO is Lighter Than Air!!! MICHAEL L. SAVAGE, LLC. 150

151 Getting the Right Height According to information from one of our manufacturers, you can install a CO alarm at any height in your home. The reason is that the molecular weight of air is almost identical to the weight of carbon monoxide. Air is typically composed of 78% nitrogen and 21% oxygen. Nitrogen has a specific weight of while carbon monoxide is almost identical CO mixes with Air as their weights are approximately the same. Also remember that a minimum of 3 carbon monoxide alarms are recommended for a two story home, one on each level near the stairwells. Put one inside each bedroom if you close bedroom doors at night. MICHAEL L. SAVAGE, LLC. 151

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153 What s Wrong with this? MICHAEL L. SAVAGE, LLC. 153

154 Questions? MICHAEL L. SAVAGE, LLC. 154

155 For Other Training Opportunities Visit Us At: Or at: MICHAEL L. SAVAGE, LLC. 155

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